From mboxrd@z Thu Jan 1 00:00:00 1970 From: harry2845 Subject: How to intercept supervisor call using Xen? Date: Tue, 2 Sep 2014 18:12:09 -0700 (PDT) Message-ID: <1409706729235-5724551.post@n5.nabble.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org After reading the document of ARM, I set HCR.TGE to 1 at the init time. WRITE_SYSREG(HCR_TGE|HCR_PTW|HCR_BSU_OUTER|HCR_AMO|HCR_IMO|HCR_VM|HCR_TWI|HCR_TSC| HCR_TAC, HCR_EL2); And I add a case in the function do_trap_hyperviosr. But after modifying, there will be a kernel panic when I execute Xen. [ 7.866384] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 7.866384] [ 7.881866] CPU: 0 PID: 1 Comm: init Not tainted 3.15.0-rc5+ #91 [ 7.891024] [<80017dc4>] (unwind_backtrace) from [<800138f8>] (show_stack+0x20/0x24) [ 7.903640] [<800138f8>] (show_stack) from [<807864a4>] (dump_stack+0x70/0xc0) [ 7.915213] [<807864a4>] (dump_stack) from [<80781030>] (panic+0x9c/0x204) [ 7.926088] [<80781030>] (panic) from [<8002c900>] (do_exit+0x86c/0x9f0) [ 7.936615] [<8002c900>] (do_exit) from [<8002cbc0>] (do_group_exit+0x4c/0xcc) [ 7.948188] [<8002cbc0>] (do_group_exit) from [<8003b5dc>] (get_signal_to_deliver+0x37c/0x71c) [ 7.962535] [<8003b5dc>] (get_signal_to_deliver) from [<80780aec>] (do_signal+0xb4/0x380) [ 7.976013] [<80780aec>] (do_signal) from [<800131a8>] (do_work_pending+0x8c/0xe0) [ 7.988278] [<800131a8>] (do_work_pending) from [<8000f680>] (work_pending+0xc/0x20) [ 8.000901] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 8.000901] -- View this message in context: http://xen.1045712.n5.nabble.com/How-to-intercept-supervisor-call-using-Xen-tp5724551.html Sent from the Xen - Dev mailing list archive at Nabble.com.